Predicting biogas production from a two-plot fit of extractables and recalcitrants from ligno-cellulosic biomass feedstocks

Ravi Kumar, D and Chanakya, HN and Bhatia, S and Dasappa, S (2020) Predicting biogas production from a two-plot fit of extractables and recalcitrants from ligno-cellulosic biomass feedstocks. In: Bioresource Technology Reports, 10 .

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Abstract

Anaerobic digestion of lignocellulosic biomass is a sustainable source of energy. Easy to degrade extractive based materials were easy to degrade and produced large volumes of gas reaching 350 to 450 ml/gVS fed. Whereas predominantly lignin bound tropical biomass like leaves produced the less gas. Among cereal straws, finger millet produced maximum gas at 450 ml/gVS while wheat produced 273 ml biogas/gVS. The concept of inflection point has been introduced in this paper where the gas production linearized to a two-plot fit, that is the gas production rate at initial stages, predominantly due to pectic (extractives) inflects to a slower second phase of gas production. It was found that the leafy biomass takes a longer time to degrade to produce 60 of total gas with an inflection point between 45 and 70 days. Pectin based biomass such as peels took 10 to 30 days. © 2020 Elsevier Ltd

Item Type:	Journal Article
Publication:	Bioresource Technology Reports
Publisher:	Elsevier Ltd
Additional Information:	Copyright of this article belongs to Elsevier Ltd
Department/Centre:	Division of Mechanical Sciences > Centre for Sustainable Technologies (formerly ASTRA)
Date Deposited:	14 Jul 2021 11:29
Last Modified:	14 Jul 2021 11:29
URI:	http://eprints.iisc.ac.in/id/eprint/64850

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